//package com.ruoyi.framework.jwt.filter;
//
//import java.io.IOException;
//import java.io.PrintWriter;
//import javax.servlet.ServletRequest;
//import javax.servlet.ServletResponse;
//import javax.servlet.http.HttpServletRequest;
//import javax.servlet.http.HttpServletResponse;
//import org.apache.shiro.authc.AuthenticationException;
//import org.apache.shiro.web.filter.AccessControlFilter;
//import org.apache.shiro.web.util.WebUtils;
//import org.slf4j.Logger;
//import org.slf4j.LoggerFactory;
//import org.springframework.http.HttpStatus;
//import org.springframework.web.bind.annotation.RequestMethod;
//import com.alibaba.fastjson.JSON;
//import com.ruoyi.common.core.domain.AjaxResult;
//import com.ruoyi.common.utils.StringUtils;
//import com.ruoyi.framework.jwt.auth.JwtToken;
//
///**
// * jwt 自定义拦截器
// *
// * @author ruoyi
// */
//public class JwtFilter extends AccessControlFilter
//{
//    private static final Logger LOGGER = LoggerFactory.getLogger(JwtFilter.class);
//
//    private static final String AUTHZ_HEADER = "token";
//
//    private final ThreadLocal<String> MSG_HOLDER = new ThreadLocal<>();
//
//    @Override
//    public boolean onPreHandle(ServletRequest request, ServletResponse response, Object mappedValue) throws Exception
//    {
//        return super.onPreHandle(request, response, mappedValue);
//    }
//
//    @Override
//    protected boolean isAccessAllowed(ServletRequest request, ServletResponse response, Object mappedValue) throws Exception
//    {
//        return this.executeLogin(request, response);
//    }
//
//    /**
//     * 执行登录方法（UserRealm判断，异常返回false）
//     */
//    protected boolean executeLogin(ServletRequest request, ServletResponse response) throws Exception
//    {
//        String token = WebUtils.toHttp(request).getHeader(AUTHZ_HEADER);
//        if (StringUtils.isEmpty(token))
//        {
//            MSG_HOLDER.set("消息头不正确，header需要携带token参数");
//            return false;
//        }
//        try
//        {
//            // 断是否有权限
//            JwtToken jwtToken = new JwtToken(token);
//            this.getSubject(request, response).login(jwtToken);
//            return true;
//        }
//        catch (AuthenticationException e)
//        {
//            if (e.getCause() instanceof TokenExpiredException)
//            {
//                MSG_HOLDER.set("token已过期");
//            }
//            else if (e.getCause() instanceof JWTVerificationException)
//            {
//                MSG_HOLDER.set("用户密码错误");
//            }
//            else
//            {
//                MSG_HOLDER.set("用户信息验证失败：" + e.getMessage());
//            }
//            return false;
//        }
//    }
//
//    /**
//     * 请求前处理,处理跨域
//     */
//    @Override
//    protected boolean preHandle(ServletRequest request, ServletResponse response) throws Exception
//    {
//        HttpServletRequest httpServletRequest = (HttpServletRequest) request;
//        HttpServletResponse httpServletResponse = (HttpServletResponse) response;
//        httpServletResponse.setHeader("Access-control-Allow-Origin", httpServletRequest.getHeader("Origin"));
//        httpServletResponse.setHeader("Access-Control-Allow-Methods", "GET,POST,OPTIONS,PUT,DELETE");
//        httpServletResponse.setHeader("Access-Control-Allow-Headers", httpServletRequest.getHeader("Access-Control-Request-Headers"));
//        // 跨域时,option请求直接返回正常状态
//        if (httpServletRequest.getMethod().equals(RequestMethod.OPTIONS.name()))
//        {
//            httpServletResponse.setStatus(HttpStatus.OK.value());
//            return false;
//        }
//        return super.preHandle(request, response);
//    }
//
//    /**
//     * 异常处理
//     */
//    @Override
//    protected boolean onAccessDenied(ServletRequest request, ServletResponse response) throws Exception
//    {
//        this.jwtFail(request, response, 401, "对不起,您无权限进行操作!");
//        return false;
//    }
//
//    /**
//     * 认证失败，异常返回
//     */
//    protected void jwtFail(ServletRequest request, ServletResponse response, int code, String message)
//    {
//        HttpServletResponse httpResponse = WebUtils.toHttp(response);
//        String contentType = "application/json;charset=UTF-8";
//        httpResponse.setStatus(401);
//        httpResponse.setContentType(contentType);
//        try
//        {
//            String msg = StringUtils.isNotEmpty(MSG_HOLDER.get()) ? MSG_HOLDER.get() : message;
//            AjaxResult ajaxResult = new AjaxResult().put(AjaxResult.CODE_TAG, code).put(AjaxResult.MSG_TAG, msg);
//            PrintWriter printWriter = httpResponse.getWriter();
//            printWriter.append(JSON.toJSONString(ajaxResult));
//        }
//        catch (IOException e)
//        {
//            LOGGER.error("sendChallenge error,can not resolve httpServletResponse");
//        }
//    }
//}
